Unique values multidimensional array

Question

I have made a multidimensional array and want to filter duplicate values. I tried several solutions which i have found on the web but they don't work well. see my code below how i'm making my array.

while (listItemEnumerator.moveNext()) {
    item = listItemEnumerator.get_current();

    //Get Aanvrager and add to array
    if (item.get_item("Aanvrager")) {
        aanvragerslijst.push({
            id: item.get_item("ID"),
            value: item.get_item("Aanvrager")
        });
    }

    //&& jQuery.inArray(item.get_item("Afdelingshoofd"), afdelingshoofdlijst) == 0)


    //Get Afdelingshoofd and add to array
    if (item.get_item("Afdelingshoofd")) {
        afdelingshoofdlijst.push({
            id: item.get_item("ID"),
            value: item.get_item("Afdelingshoofd").get_lookupValue()
        });
    }     
}


$.each(afdelingshoofdlijst, function (key, value) {
    if (value) {
        $('#LKAfdelingshoofd').append($("<option/>", {
            value: value.value,
            text: value.value
        }));
    }
});

It would be better if you can simplify the problem to the bare minimal, abstract it from your code, give us the input and expected output and a demo to reproduce the issue. — elclanrs
– elclanrs, Commented Jun 2, 2014 at 7:09
possible duplicate of How to get only unique items in a multidimensional array with JavaScript/jquery? — Karlen Kishmiryan
– Karlen Kishmiryan, Commented Jun 2, 2014 at 11:13

Arpit Vasani · Accepted Answer · 2021-11-15 01:00:18Z

2

Try the following

function getUniqueValues(array, key) {
var result = new Set();
array.forEach(function(item) {
    if (item.hasOwnProperty(key)) {
        result.add(item[key]);
    }
});
return result;
}

Usage:

var uniqueArr = getUniqueValues(yourArr,keyYouWant)

Reference:Get Unique Values in a MultiDim Array

Good Luck

edited Nov 15, 2021 at 1:00

Arpit Vasani

1,0238 silver badges20 bronze badges

answered Aug 10, 2017 at 13:30

CyberNinja

87411 silver badges26 bronze badges

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